Title

Development Of Electrically Conductive Transparent Coatings For Acrylic Plastic

Date

1952

Index Abstract

Online

Photo Quality

Complete

Report Number

WADC TR 52-48

Creator

Bjorksten, Johan

Smith, Evelyn E.

Roth, Robert J.

Hamilton, Harry L.

Corporate Author

Bjorksten Research Laboratories, Inc.

Laboratory

Materials Laboratory

Extent

71

PB Number

PB118034

Identifier

ADA075989

Access Rights

Notice(s)

Distribution Classification

1

Contract

AF 33(038)-23319

DoD Project

None Given

DoD Task

None Given

DTIC Record Exists

Yes

Distribution Change Authority Correspondence

None

Distribution Conflict

No

Index Price

$4.50

Abstract

In order to dissipate precipitation electrostatic charges built up on transparent plastic aircraft canopies during flight an electrically conductive transparent coating, easily applied to formed aircraft canopies made from acrylic sheet conforming to Specification MIL-P-5425, has been developed. The composite material, i.e., the acrylic and applied coating, retains essentially all the original mechanical properties, optical clarity, and light transmittance characteristics of the base material. Its surface resistance is in the range 1- 10 megohms per square and is relatively insensitive to the wide variation in relative humidity, temperature, and altitude conditions that might be expected in aircraft operation. The coated acrylic is transparent to radio frequency energy as well as light, its dielectric loss factor being only slightly higher than the acrylic alone. It has sufficient permanence to the effects of sunlight, temperature variations, crazing, rain, abrasion, wind erosion, and oil absorption associated with the normal operation and maintenance of aircraft. Three F-86 aircraft canopies, two new and one removed from service, were coated with the developed coating. The new canopies were tested in flight at Wright Air Development Center and performed satisfactorily.

Report Availability

Full text available

Date Issued

1952-02

Provenance

IIT

Type

report

Format

1 online resource